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109815POWER SYSTEM EVENTS14/09/2023 07:27:56 PM
Update - Non-credible contingency event - SA region - 14/09/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 14/09/2023
Refer AEMO Electricity Market Notice 109807
At 1920 hrs the South East-Mayura-Snuggery 132kV LINE was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 14/09/2023
Refer AEMO Electricity Market Notice 109807
At 1920 hrs the South East-Mayura-Snuggery 132kV LINE was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
109807POWER SYSTEM EVENTS14/09/2023 04:40:27 PM
Non-credible contingency event - SA region - 14/09/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 14/09/2023
At 1450 hrs the Snuggery CBs 6131 and 6028 opened automatically, offloading the South East-Mayura-Snuggery 132kV LINE at the Snuggery end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 14/09/2023
At 1450 hrs the Snuggery CBs 6131 and 6028 opened automatically, offloading the South East-Mayura-Snuggery 132kV LINE at the Snuggery end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
109789POWER SYSTEM EVENTS13/09/2023 01:59:35 PM
Non-credible contingency event - QLD region - 13/09/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - QLD region - 13/09/2023
At 1204 hrs the Ross No.1 275 kV SVC tripped during switching for the planned outage of Ross No.4 275/132 kV transformer.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - QLD region - 13/09/2023
At 1204 hrs the Ross No.1 275 kV SVC tripped during switching for the planned outage of Ross No.4 275/132 kV transformer.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
109563POWER SYSTEM EVENTS04/09/2023 01:53:34 PM
Update - Non-credible contingency event - SA region - 04/09/2023
AEMO ELECTRICITY MARKET NOTICE.
Update - Non-credible contingency event - SA region - 04/09/2023
Refer AEMO ELECTRICITY MARKET NOTICE MN 109561
At 1341 hrs the Tungkillo East 275 KV Bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Update - Non-credible contingency event - SA region - 04/09/2023
Refer AEMO ELECTRICITY MARKET NOTICE MN 109561
At 1341 hrs the Tungkillo East 275 KV Bus was returned to service.
The cause of this non-credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
109561POWER SYSTEM EVENTS04/09/2023 01:15:55 PM
Non-credible contingency event - SA region - 04/09/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 04/09/2023
At 1252 hrs the Tungkillo East 275 KV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 04/09/2023
At 1252 hrs the Tungkillo East 275 KV Bus tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
109443POWER SYSTEM EVENTS25/08/2023 02:16:55 PM
Non-credible contingency event - TAS region - 25/08/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - TAS region - 25/08/2023
At 1331 hrs the Gordon C 220kV BUS tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - TAS region - 25/08/2023
At 1331 hrs the Gordon C 220kV BUS tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
109321POWER SYSTEM EVENTS15/08/2023 12:50:46 PM
Non-credible contingency event - SA region - 15/08/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA Region region - 15/08/2023
At 1147 hrs the Blyth West - Munno Para 275kV Line tripped at Blyth West end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA Region region - 15/08/2023
At 1147 hrs the Blyth West - Munno Para 275kV Line tripped at Blyth West end only.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
109283POWER SYSTEM EVENTS11/08/2023 08:57:28 PM
Non-credible contingency event - SA region - 11/08/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - SA region - 11/08/2023
At 2035 hrs the Snapper Point power station generators GT1, GT2, GT3, GT4, GT5 tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
Non-credible contingency event - SA region - 11/08/2023
At 2035 hrs the Snapper Point power station generators GT1, GT2, GT3, GT4, GT5 tripped.
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
The cause of this non credible contingency event is not known at this stage.
Manager NEM Real Time Operations
109048POWER SYSTEM EVENTS26/07/2023 02:25:01 PM
Non-credible contingency event - Vic region - 26/07/2023
AEMO ELECTRICITY MARKET NOTICE.
Non-credible contingency event - Vic region - 26/07/2023
At 1345 hrs the Hazelwood A4 500/220 kV Transformer tripped on the 220 kV CBs at Hazelwood power station end only
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
At 1348 hrs the Hazelwood A4 500/220 kV Transformer was returned to service
The cause of this non credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations
Non-credible contingency event - Vic region - 26/07/2023
At 1345 hrs the Hazelwood A4 500/220 kV Transformer tripped on the 220 kV CBs at Hazelwood power station end only
AEMO did not instruct load shedding.
AEMO has not been advised of any disconnection of bulk electrical load.
At 1348 hrs the Hazelwood A4 500/220 kV Transformer was returned to service
The cause of this non credible contingency event has been identified and AEMO is satisfied that another occurrence of this event is unlikely under the current circumstances.
AEMO will not reclassify this event as a credible contingency event.
Manager NEM Real Time Operations